RE:Economies of scaleIf Barrick is shedding mines to be more efficient, then it appears they've over-extended themselves at some point in the past. That sounds to me like a management problem.
I was referring to in general a miner that is using it's existing resources and at some point needs to add resources to increase production or keep it at a high level. The miner certainly can't increase production with their resouces falling.
There ARE corporate efficenties by adding a new mine, if it's done right.
Most of what you say makes no sense at all. You're just making stupid comments.